Reliability enhancement in downlink communication

Abstract

A WTRU may be configured with a plurality of monitoring patterns. The WTRU may determine, based at least in part upon the particular slot in the downlink channel, monitoring occasions for each of the plurality of monitoring patterns. The WTRU determines PDCCH candidates for each of the plurality of monitoring patterns and evaluates the total number of PDCCH candidates for each of the plurality of monitoring patterns against blind detection limits. The WTRU selects one of the plurality of monitoring patterns for the slot based at least in part on determining the PDCCH candidates for the selected monitoring pattern satisfy the blind detection limits.

1 - 19 . (canceled) 
     
     
         20 . A wireless transmit and receive unit (WTRU) comprising:
 a processor configured to:   receive configuration information indicating associated search spaces, the associated search spaces comprising a first search space and a second search space;   receive downlink control information (DCI) by blind detection over the associated search spaces; and   receive one or more physical downlink shared channels (PDSCHs) using the DCI.   
     
     
         21 . The WTRU of  claim 20 ,
 wherein the processor configured to receive the configuration information indicating the associated search spaces is configured to receive the configuration information via radio resource control (RRC) signaling.   
     
     
         22 . The WTRU of  claim 20 ,
 wherein the processor configured to receive the DCI by blind detection over the associated search spaces is further configured to receive the DCI in a first set of physical downlink control channel (PDCCH) candidates in the first search space and receive the DCI in a second set of PDCCH candidates in the second search space.   
     
     
         23 . The WTRU of  claim 22 ,
 wherein the processor configured to receive the DCI in the first set of PDCCH candidates in the first search space and receive the DCI in the second set of PDCCH candidates in the second search space is configured to receive a same DCI in each of the first search space and the second search space.   
     
     
         24 . The WTRU of  claim 23 ,
 wherein the processor configured to receive the same DCI in the first search space and the second search space is configured to receive the same DCI in each of the first set of PDCCH candidates in the first search space and the second set of PDCCH candidates in the second search space.   
     
     
         25 . The WTRU of  claim 24 ,
 wherein the first set of PDCCH candidates and the second set of PDCCH candidates comprise a same set of PDCCH candidates.   
     
     
         26 . The WTRU of  claim 20 ,
 wherein the processor configured to receive one or more PDSCHs using the DCI is further configured to receive a first PDSCH and a second PDSCH.   
     
     
         27 . The WTRU of  claim 26 ,
 wherein the processor configured to receive the first PDSCH and the second PDSCH is further configured to receive a same data item carried on the first PDSCH and the second PDSCH.   
     
     
         28 . The WTRU of  claim 26 ,
 wherein the processor is further configured to combine data received on the first PDSCH and the second PDSCH.   
     
     
         29 . The WTRU of  claim 20 ,
 wherein the processor configured to receive one or more PDSCHs using the DCI is further configured to receive a single PDSCH using the DCI.   
     
     
         30 . A method of data communication comprising:
 receiving configuration information indicating associated search spaces, the associated search spaces comprising a first search space and a second search space;   receiving downlink control information (DCI) by blind detection over the associated search spaces; and   receiving one or more physical downlink shared channels (PDSCHs) using the DCI.   
     
     
         31 . The method of  claim 30 ,
 receiving the configuration information indicating the associated search spaces further comprises receiving the configuration information via radio resource control (RRC) signaling.   
     
     
         32 . The method of  claim 30 ,
 wherein receiving the DCI by blind detection over the associated search spaces further comprises receiving the DCI in a first set of physical downlink control channel (PDCCH) candidates in the first search space and receiving the DCI in a second set of PDCCH candidates in the second search space.   
     
     
         33 . The method of  claim 32 ,
 wherein receiving the DCI in the first set of PDCCH candidates in the first search space and receiving the DCI in the second set of PDCCH candidates in the second search space comprises receiving a same DCI in each of the first search space and the second search space.   
     
     
         34 . The method of  claim 33 ,
 wherein receiving the same DCI in the first search space and the second search space comprises receiving the same DCI in each of the first set of PDCCH candidates in the first search space and the second set of PDCCH candidates in the second search space.   
     
     
         35 . The method of  claim 34 ,
 wherein the first set of PDCCH candidates and the second set of PDCCH candidates comprise a same set of PDCCH candidates.   
     
     
         36 . The method of  claim 30 ,
 wherein receiving one or more PDSCHs using the DCI further comprises receiving a first PDSCH and a second PDSCH.   
     
     
         37 . The method of  claim 36 ,
 wherein receiving the first PDSCH and the second PDSCH further comprises receiving a same data item carried on the first PDSCH and the second PDSCH.   
     
     
         38 . The method of  claim 36 , further comprising combining data received on the first PDSCH and the second PDSCH. 
     
     
         39 . The method of  claim 30 ,
 wherein receiving one or more PDSCHs using the DCI further comprising receiving a single PDSCH using the DCI.